Results 81 to 90 of about 8,625 (225)

Fisheries Bycatch of Chondrichthyes

, 2017
This chapter reviews the current state of knowledge about global chondrichthyes bycatch, including how the combination of biological characteristics of these species and the impact of different fishing methods reflect their vulnerability to bycatch.
Sara Bonanomi, Jure Bri', Alessandro Colombelli, Emilio Notti, Jacopo Pulcinella, Antonello Sala   +5 more
openaire   +4 more sources

Evolutionary trajectories of tooth histology patterns in modern sharks (Chondrichthyes, Elasmobranchii)

Journal of Anatomy, 2019
During their evolutionary history, modern sharks developed different tooth mineralization patterns that resulted in very distinct histological patterns of the tooth crown (histotypes). To date, three different tooth histotypes have been distinguished: (i)
Patrick L. Jambura, Julia Türtscher, René Kindlimann, B. Metscher, Cathrin Pfaff, Sebastian Stumpf, G. Weber, J. Kriwet   +7 more
semanticscholar   +1 more source

Phylogeny of the Electric Rays of the Family Narcinidae (Gill, 1862): Systematic Review and Evidence of the Dispersal Routes to America

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The family Narcinidae has a cosmopolitan distribution; however, its systematic composition and phylogenetic position within Torpediniformes remain poorly understood. This study evaluates the evolutionary and biogeographic history of the family Narcinidae and investigates its distribution patterns using molecular systematics.
Luis Fernando da Silva Rodrigues‐Filho, Richard Klein Castro Silva, Eduardo Lopes de Lima, Raquel Sicca‐Ramirez, Getúlio Rincon, Jorge Luiz Silva Nunes, Iracilda Sampaio, João Braullio de Luna Sales   +7 more
wiley   +1 more source

The Italian record of the Cretaceous shark, Ptychodus latissimus Agassiz, 1835 (Chondrichthyes; Elasmobranchii)

PeerJ, 2020
Associated and isolated teeth of the extinct elasmobranch Ptychodus latissimus Agassiz, 1835 from the Upper Cretaceous Scaglia Rossa pelagic limestone of northern Italy are described and discussed here in detail for the first time.
Manuel Amadori, J. Amalfitano, L. Giusberti, E. Fornaciari, G. Carnevale, J. Kriwet   +5 more
semanticscholar   +1 more source

One Assay to Rule Them All: Development of a Global Environmental DNA Tool to Support Range‐Wide Surveys of an Imperiled Sawfish and Its Application in the Eastern Tropical Pacific

Ecology and Evolution, Volume 16, Issue 6, June 2026.
To identify promising locations where Largetooth Sawfish, Pristis pristis, may persist, a novel species‐specific Droplet Digital PCR (ddPCR) assay was designed capable of detecting a single copy of DNA, with in silico and in vitro validation experiments indicating functionality across the species' historical range.
Juan C. Cubillos‐M, Annmarie Fearing, Demian D. Chapman, Peter M. Kyne, P. Joana Dias, Cindy Gonzalez, Ryan N. Lehman, Yaliana Chichaco, Bryan L. Huerta‐Beltrán, Kayla L. McCulloch, Sarah M. Toepfer, John K. Carlson, Nicole M. Phillips   +12 more
wiley   +1 more source

The transition between Carcharocles chubutensis and Carcharocles megalodon (Otodontidae, Chondrichthyes): lateral cusplet loss through time

Journal of Vertebrate Paleontology, 2018
The teeth of two megatooth macro-predatory shark species (Carcharocles chubutensis and Carcharocles megalodon; Otodontidae, Chondrichthyes) occur within the Miocene Chesapeake Group of Maryland, U.S.A.
Victor J. Perez, S. J. Godfrey, Bretton W. Kent, R. Weems, J. Nance   +4 more
semanticscholar   +1 more source

Arqueofauna do Sítio Piracanjuba, Piraju-SP

Revista do Museu de Arqueologia e Etnologia, 2007
O objetivo deste trabalho foi analisar a subsistência dos Guaranis da região de Piraju-SP, pelo estudo dos vestígios faunísticos do Sítio Piracanjuba.
Manoel Mateus Bueno Gonzalez, Silvia Cristina Piedade, José Luiz de Morais   +2 more
doaj   +1 more source

The first three-dimensional fossils of Cretaceous sclerorhynchid sawfish: Asflapristis cristadentis gen. et sp. nov., and implications for the phylogenetic relations of the Sclerorhynchoidei (Chondrichthyes)

Journal of Systematic Palaeontology, 2019
A new fossil batoid (ray), Asflapristis cristadentis gen. et sp. nov., is described from six exceptionally well-preserved, three-dimensional skeletal remains from the Turonian (Late Cretaceous) of Morocco.
Eduardo Villalobos‐Segura, C. Underwood, D. Ward, Kerin M. Claeson   +3 more
semanticscholar   +1 more source

A new Pliensbachian elasmobranch (Vertebrata, Chondrichthyes) assemblage from Europe, and its contribution to the understanding of late Early Jurassic elasmobranch diversity and distributional patterns

PalZ, 2019
Here we describe a new, previously unrecognized elasmobranch microfossil assemblage consisting of isolated dental material from late Pliensbachian marginal marine, near-shore deposits of Grimmen in north-eastern Germany.
Sebastian Stumpf, J. Kriwet
semanticscholar   +1 more source

Parasites of cartilaginous fishes (Chondrichthyes) in South Africa - a neglected field of marine science.

Folia Parasitologica, 2019
Southern Africa is considered one of the world's 'hotspots' for the diversity of cartilaginous fishes (Chondrichthyes), with currently 204 reported species.
B. C. Schaeffner, Nico J. Smit
semanticscholar   +1 more source